Gas burner with only an internal flame

Abstract

A burner has a pot provided with an inlet for a gas mixture to be burned and a cap that sits on top of the pot. The pot and the cap define both a central zone for combustion of the gas mixture, and a peripheral chamber that extends around the central zone and communicates with the gas inlet. A plurality of passageways allow the gas mixture to flow from the peripheral chamber into the central zone. A deflector separates, in a non-leaktight manner, the chamber into a lower subchamber, located substantially in the extension of the inlet, and an upper subchamber adjacent said passageways.

1. A gas burner with only an internal flame that converges toward a heat concentration point, comprising:
 a pot provided with an inlet for a mixture to be burned; 
 a cap that sits on top of said pot, said pot and said cap defining 
 a central zone for combustion of said mixture to be burned, and 
 a peripheral chamber that extends around said central zone and communicates with said inlet; 
 a plurality of passageways through which said mixture flows from said peripheral chamber toward said central zone; and 
 a deflector that extends into at least a part of said peripheral chamber, 
 said inlet opening into said peripheral chamber beneath said deflector, and 
 said deflector being placed so as to separate said chamber into a lower subchamber, located approximately in an extension of said inlet, and into an upper subchamber adjacent said passageways, said deflector defining with a radially external wall of said peripheral chamber a passage between said lower subchamber and said upper subchamber, said deflector being configured such that said mixture to be burned flows into said lower subchamber, fills said lower subchamber, flows through said passage, flows through said upper subchamber, flows through said passageways, and flows into said central zone. 
 
     
     
       2. The burner as claimed in  claim 1 , wherein said deflector extends over an entire perimeter of said peripheral chamber. 
     
     
       3. The burner as claimed in  claim 1 , wherein said central zone is circular and said deflector is annular. 
     
     
       4. The burner as claimed in  claim 1 , wherein said deflector is fastened to a circular shoulder of said pot. 
     
     
       5. The burner as claimed in  claim 1 , wherein a radial width of said passage is approximately equal to half a radial width of said peripheral chamber. 
     
     
       6. The burner as claimed in  claim 1 , wherein said inlet penetrates slightly minimally into said peripheral chamber. 
     
     
       7. The burner as claimed in  claim 1 , wherein a cross section of said peripheral chamber decreases with distance traveled from said inlet. 
     
     
       8. The burner as claimed in  claim 7 , wherein a bottom of said pot has a progressively increasing rise therein with said distance traveled from said inlet. 
     
     
       9. The burner as claimed in  claim 7 , wherein axes of radially inner and outer walls of said peripheral chamber are offset from each other. 
     
     
       10. The burner as claimed in  claim 1 , wherein said cap includes a skirt connected to a ring provided with radial slots. 
     
     
       11. The burner as claimed in  claim 10 , wherein radial inner and outer walls of said ring are inscribed on inverted cones, with apexes of said inverted cones being above and below the burner, respectively. 
     
     
       12. The burner as claimed in  claim 10 , further comprising a removable casing that rests on said skirt via a plurality of supports. 
     
     
       13. A gas burner for an internal flame that converges toward a heat concentration point, comprising:
 a pot provided with an inlet for a combustible gas; 
 a cap positioned above said pot; 
 a central combustion zone defined by said pot and said cap; 
 a peripheral chamber extending around said central combustion zone and communicating with said gas inlet; 
 a deflector (i) extending peripherally outward from said pot and into at least a portion of said peripheral chamber, (ii) defining said peripheral chamber to include a lower subchamber and an upper subchamber, and (iii) defining with a radially external wall of said peripheral chamber a passage between said lower subchamber and said upper subchamber; and 
 a plurality of passageways disposed adjacent said upper subchamber through which said gas flows from said upper subchamber to said central combustion zone, 
 said gas inlet extending into said lower subchamber a distance from said external wall of the peripheral chamber, and 
 said deflector being configured to route said gas into and fill said lower subchamber, through said passage, through said upper subchamber, through said passageways, and into said central combustion zone. 
 
     
     
       14. The gas burner according to  claim 13 , wherein said deflector extends outward from an entire circumference of said pot. 
     
     
       15. The gas burner according to  claim 13 , wherein said cap includes a skirt connected to a ring provided with said passageways. 
     
     
       16. The gas burner according to  claim 15 , wherein said passageways are configured as radial slots.